What information to collect?
Try to take photos at each visit, of the whole tree (from same distance/spot) and close up of phenophase-indicating detail (twig/leaf/blossom).
For each phenophase we have given a key and a description of what you need to look for to help you identify your trees and record the events. There are also photo guides which provide more help on Tree Phenology.
Ideally you will collect data from all the six phenophases listed below, but do not worry if you can not complete all, do as many as you can.
When you have these data you register your tree and photos under Enter data